Q8. Within a specific industry, an average of 24 000 man-years of work per year have been performed from 2010 to 2019. One man-year is assumed to consist of 2 000 hours of work and all employees are assumed to work full time. In this period, the accident statistics is as shown below.

Year	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
# of fatalities	2	5	1	3	2	7	1	0	4	1

(a) Calculate PLL, FAR, and average IR for this period.

(b) Will any of the risk metrics change if the number of man-years is increased but the number of deaths remains the same?